Improvement in revolving fire-arms



1). WILLIAMSON.

Revolver. Q No. 42,823. Pateutc lzMay 17. 1864.

Wham.

NlPETERs, PHOTO-LITNOGRAPHER. WASHINGTON, n c

UNITED STATES PATENT OFFICE.

DAVID WILLIAMSON, OF BROOKLYN, NEW YORK, ASSIGNOR TO THE MOORES PATENT FIRE ARMS COMPANY, OF SAME PLACE.

IMPROVEMENT IN REVOLVING FIRE-ARMS.

Specification forming part of Letters Patent No. 12,823, dated May 17, 1864.

To all whom it may concern:

Be it known that I, DAVID WILLIAMSON, of

the city of Brooklyn, in the county of Kings and State of New York, have invented, made, and applied to use a certain new and useful Improvement in Revolving Fire-Arms; and I do hereby declare the following to be a full, clear, and exact description of my said invention, reference being had to the annexed drawings, making part of this specification, wherein- Figure l is an elevation of a revolving firearm with thclock-plate removed and the hammer in red lines, so as to represent my improvement; and Fig. 2 is a sectional plan through the stock at the locking-bolt.

Similar marks of reference denote the same parts.

Revolving fire-arms have heretofore been constructed with a bolt to take a notch in the rear end of the revolving cylinder, to hold the same while the chamber in line with the barrel is being discharged.

My invention consistsin aslidin g bolt formed with a spring-latch onits side adjacent to and in combination with a beveled pin on the hammer-tumbler, that crosses the bolt in the act of cocking and draws back the bolt by the latch, and in crossing the bolt in the act of firing the inclined surface of the pin presses back said latch and the spring carrying the same without moving the bolt itself.

In the drawings, a is the stock; I), the barrel; c,thecylindercontaining chambers, ofany desired character or number.

(1 is the hammer, (shown in red linesin Fig. 1,) actuated by any usual mainspring, and titted with a trigger and pawl to rotate the cylinder.

iis my improved stop-bolt, made to slide parallel, or nearly so, to the axis of the cylinder, and kept forward by a spring, 1, acting at the end of said bolt 6; and 2 is a cup or washer, that may be placed between the spring and bolt or attached to the end of the spring, to'

form a spring on one side, at t, and upon which is a projection, 5, and on the hammer d is a pin, 6, the lower side of which is beveled off. (See red line, Fig. 1.) As the hammeriscocke'd the pin 6 moves across the path of the stopbolt, and taking the inclined under side of the projection 5, said bolt is drawn back, and the pin 6, passing along, clears the said projection 5, and the bolt is driven forward byihe spring 1 and enters the notch of the cylinder when said notch comes opposite to said bolt. As the hammer is discharged the inclined under side of the pin 6 presses back the spring side 4 of the bolt ias it passes over theprojection 5, and then said part 5 again springs over 6, to be acted on as before.

The bolt 6 may be made from a circular or flat piece of metal, and the spring 1 may be either helical, as shown, or a bent strip.

What I claim, and desire to secure by Letters Patent, is

The combination of a sliding spring-bolt parallel, or nearly so, with the axis of the c 1- inder to be looked, a spring-latch on the side of said bolt adjacent to the hammer-tumbler, and a beveled pin on said hammer-tumbler, crossing said bolt in the act of cooking and firing, as and for the purposes specified.

In witness whereof I have hereunto set my signature this 13th day of January, 1864.

Witnesses: D. WILLIAMSON.

EDWIN P. FOWLER, H. N. BRUSH. 

